PPTP-based Remote Site Connection

Applies To: Windows Server 2008, Windows Server 2008 R2

The Chicago branch office is a PPTP-based branch office that uses a router running Windows Server 2008 R2 to create a persistent, router-to-router VPN connection with the corporate office router in New York. The connection is never terminated even when idle.

To deploy a PPTP, two-way initiated, persistent, router-to-router VPN connection to the corporate office based on the settings configured in Common Configuration for the VPN Server and Remote Site Connection and Static Routed IP Network Example, the following settings are configured on the VPN server and Chicago router.

VPN server configuration

The VPN server is configured with a demand-dial interface and a static route.

Demand-dial interface for router-to-router VPN connection

To connect the corporate office VPN server to the Chicago router by using a router-to-router VPN connection over the Internet, a demand-dial interface is created on the corporate office VPN server by using the Demand-Dial Interface Wizard with the following settings:

  • Interface name: VPN_Chicago

  • Connection type: Connect using virtual private networking (VPN)

  • VPN type: Point to Point Tunneling Protocol (PPTP)

  • Destination address: 131.107.0.1

  • Protocols and security: Route IP packets on this interface

  • Static routes for remote networks (all locations on the Chicago network):

    • Interface: VPN_Chicago

    • Destination: 192.168.9.0

    • Network mask: 255.255.255.0

    • Metric: 1

  • Dial-out credentials:

    • User name: VPN_CorpHQ

    • Domain: fabrikam.com

    • Password: o3\Dn6@`-J4

After the demand-dial interface is created, on the Options tab, under Connection type, the Persistent connection option is selected. To obtain properties of a demand-dial interface, click Network Interfaces, right-click the demand-dial interface, and then click Properties.

Chicago router configuration

The Chicago router is configured with a demand-dial interface and a static route.

Demand-dial interface for router-to-router VPN connection

To connect the Chicago office router to the corporate office router by using a router-to-router VPN connection over the Internet, a demand-dial interface is created on the Chicago office router by using the Demand-Dial Interface Wizard with the following settings:

  • Interface name: VPN_CorpHQ

  • Connection type: Connect using virtual private networking (VPN)

  • VPN type: Point to Point Tunneling Protocol (PPTP)

  • Destination address: 207.209.68.1

  • Protocols and security: Route IP packets on this interface

  • Static routes for remote networks (VPN server only):

    • Interface: The WAN adapter attached to the Internet

    • Destination: 207.209.68.1

    • Network mask: 255.255.255.255

    • Gateway: 0.0.0.0

    • Metric: 1

Note

Because the WAN adapter creates a point-to-point connection to the ISP, any address can be entered for the gateway. The gateway address of 0.0.0.0 is an example.

  • Static routes for corporate intranet and branch offices (all locations on the corporate intranet):

    • Interface: VPN_CorpHQ

    • Destination: 172.16.0.0

    • Network mask: 255.240.0.0

    • Metric: 1

  • Static routes for remote networks (all branch office locations):

    • Interface: VPN_CorpHQ

    • Destination: 192.168.0.0

    • Network mask: 255.255.0.0

    • Metric: 1

  • Dial-out credentials:

    • User name: VPN_Chicago

    • Domain: fabrikam.com

    • Password: U9!j5dP(%q1

After the demand-dial interface is created, on the Options tab, under Connection type, the Persistent connection option is selected.